astm a240 grade 316ti (s31635) stainless steel plate supplie

ASTM A240 Grade 316Ti (S31635) Stainless Steel Plate

When your application demands the chloride resistance of 316 combined with titanium stabilization to prevent sensitization during welding or high-temperature service, ASTM A240 Grade 316Ti (S31635) stainless steel plate is the specialized solution. We also call it A240 Gr 316Ti in engineering shorthand (Gr for Grade), A240 SS 316Ti (SS for stainless steel), A240 TP 316Ti (TP for tubing plate, common in heat exchanger specs), or the legacy AISI 316Ti plate (from the American Iron and Steel Institute).

No matter how you searched, you’re likely after a material that adds titanium (5x(C+N) min, up to 0.70%) to the 316L base, locking up carbon and nitrogen to avoid chromium carbide precipitation in the 450–850°C (842–1562°F) range—perfect for welded structures exposed to intermittent heat and corrosives. With a PREN of 24–26, it matches 316L’s pitting resistance while offering superior intergranular stability. At Gangsteel, we melt it via AOD + ladle refining for precise Ti control, rolling plates up to 100 mm thick in finishes from No.1 to mirror polish.

With over 25 years as a premier Chinese manufacturer and global exporter, Gangsteel supplies ASTM A240 Grade 316Ti to petrochemical, power, and chemical processing industries, fully certified to ASTM A240 and ASME SA240. This stabilized austenitic grade excels in environments where welding without post-weld annealing is required and thermal cycling occurs, such as furnace parts, exhaust systems, and heat exchangers. It bridges 316L’s weldability with enhanced high-temperature corrosion resistance, often replacing pricier alloys. Read on for the complete technical profile. Explore our full ASTM A 240/A 240M stainless steel plate lineup, including low-carbon ASTM A 240 Gr 316L and high-temp ASTM A 240 Gr 316H.

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1. What is ASTM A240 Grade 316Ti (S31635)?

ASTM A240 Grade 316Ti (UNS S31635) is a titanium-stabilized, molybdenum-bearing austenitic stainless steel under ASTM A240 for plates, sheets, and strips in pressure vessels, welded fabrications, and high-temperature corrosive service. The “Ti” signifies titanium addition—minimum 5×(C+N), typically 0.40–0.60%—which preferentially forms Ti(C,N) carbides and nitrides, preventing chromium depletion at grain boundaries during welding or thermal exposure in the sensitization range. This allows A240 Gr 316Ti to be welded without post-weld heat treatment and used in intermittent service up to 925°C (1700°F) while retaining full corrosion resistance.

Developed in the 1960s to address polythionic acid stress corrosion cracking (PASCC) in refineries and sensitization in welded 316, 316Ti has become standard for heat exchangers, boiler tubes, and exhaust manifolds. At Gangsteel, we use precise ladle metallurgy to achieve Ti/C ratios >8:1, ensuring complete stabilization and fine grain size (ASTM 6–8). With 16–18% Cr, 10–14% Ni, and 2–3% Mo, it delivers the same pitting/crevice resistance as 316/316L (PREN 24–26) plus thermal stability. The microstructure remains fully austenitic, non-magnetic, with excellent ductility (elongation >40%).

Searchers for “A240 SS 316Ti” often need its dual benefits: molybdenum for chloride pitting (CPT ~30°C in ASTM G48) and titanium for IGC resistance post-weld (passes ASTM A262 Practice E even after 700°C/1h exposure). Weld with ER316Ti or 316L filler; no preheat or anneal needed. Thermal conductivity (14.6 W/m·K) and expansion (16.5 × 10⁻⁶/°C) minimize distortion in mixed assemblies. Compared to ASTM A 240 Gr 321, 316Ti adds Mo for superior wet corrosion, making it the choice for combined heat and chloride exposure.

For projects like sulfuric acid heat exchangers or offshore flare stacks, A240 TP 316Ti’s weld-and-forget stability and long-term performance often reduce maintenance by 50%, as documented in our European refinery case studies.

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2. ASTM A240 Grade 316Ti Chemical Composition

The composition of ASTM A240 Grade 316Ti is optimized for stabilization and corrosion resistance, per Table 1. Gangsteel’s refining ensures Ti recovery >90% and low oxygen for clean welds.

Titanium binds C and N, preserving Cr at boundaries. Molybdenum enhances pitting resistance. Our polythionic acid tests (NACE TM0177) show no cracking after 500 hours. Carbon is kept ≤0.07% to minimize excess TiC.

Note: Unlike ASTM A 240 Gr 316L, 316Ti uses Ti instead of low C for sensitization control—better for thermal cycling. MTRs include Ti/C ratio.

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3. ASTM A240 Grade 316Ti Mechanical Properties

Mechanics balance strength and ductility, annealed at 1050°C min.

Ti stabilization maintains properties after 800°C exposure. Fatigue ~230 MPa at 10⁷cycles. Charpy >100J at -196°C.

Vs ASTM A 240 Gr 316H, similar strength but Ti prevents sigma phase in long holds.

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4. ASTM A240 Grade 316Ti Allowable Stress

ASME Section II Part D Table 1A values.

Ti prevents degradation at 600–800°C. Certs include full curves.

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5. ASTM A240 Grade 316Ti Equivalent Materials

Global standards for interchangeability.

Dual-certs for ASME/EN compliance.

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6. ASTM A240 Grade 316Ti vs ASTM A 240 Gr 316L, ASTM A 240 Gr 316, and ASTM A 240 Gr 321

Comparison from Gangsteel data vs ASTM A 240 Gr 316L, ASTM A 240 Gr 316, ASTM A 240 Gr 321.

• Gr 316Ti vs 316L: 316Ti’s Ti prevents sensitization at 500–800°C; 316L relies on low C—use 316Ti for thermal cycling, 316L for ambient welds.
• Gr 316Ti vs 316: Both strong; 316Ti weld-stable without anneal, 316 needs it for thick sections.
• Gr 316Ti vs 321: Both stabilized; 316Ti adds Mo for chloride resistance—ideal for wet + heat.

Choose 316Ti for welded heat+corrosion, 316L for welds only, 316 for strength, 321 for dry heat.

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7. ASTM A240 Grade 316Ti Specifications

Precision specs with ±0.05 mm tolerances.

7.1 Plate and Sheet

• Thickness: 0.5–100 mm (plate), 0.3–6 mm (sheet)
• Width: 1000–3000 mm
• Length: 2000–12000 mm/coils
• Surface: 2B, BA, No.1; pickled
• Standards: ASTM A240, ASME SA240, AMS 5591
• Uses: Plates for tube sheets, sheets for baffles

7.2 Bar and Rod

• Diameter: 6–400 mm
• Length: Up to 12000 mm
• Finish: Forged, peeled
• Standards: ASTM A276, ASME SA479
• Uses: Bolts, tie rods

7.3 Custom Components

• Types: Dished ends, nozzles
• Processes: Hot-formed, machined
• Certs: NACE, EN 10204 3.2
• Uses: Bespoke for refineries

Stock: 800 tons; 10-day leads.

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8. Applications of ASTM A240 Grade 316Ti

316Ti thrives in combined heat and corrosion:

• Petrochemical: Heat exchangers; resists PASCC.
• Power: Boiler tubes; stable to 800°C.
• Chemical: Acid reactors; chloride + heat tolerant.
• Exhaust Systems: Manifolds; thermal cycling.
• Desalination: Evaporators; seawater + heat.

Vs ASTM A 240 Gr 304H, 316Ti adds Mo+Ti for wet heat.

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9. Price of ASTM A240 Grade 316Ti

As of November 2025, A240 Gr 316Ti prices range USD 4.5–6.0 per kg FOB, with plates at $5.0–5.5/kg, driven by Ti addition (+15–20% over 316L) and Mo/Ni (~$17k/ton Ni). Bulk >5t discounts 12%. Gangsteel offers stable quotes.

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10. FAQ for ASTM A240 Grade 316Ti Stainless Steel Plate

Q: What is the difference between ASTM A240 Grade 316Ti and 316L?

A: Grade 316Ti adds titanium (0.40–0.60%) to bind carbon and nitrogen, preventing sensitization during welding or high-temperature exposure (450–850°C), allowing use in thermal cycling without post-weld annealing; 316L uses ultra-low carbon (≤0.03%) for weldability but lacks stabilization for prolonged heat—316Ti is superior for heat exchangers and exhausts.

Q: Can ASTM A240 Grade 316Ti be used at high temperatures?

A: Yes, it excels in intermittent service up to 925°C and continuous to 870°C; titanium stabilization prevents chromium carbide formation and sigma phase, maintaining corrosion resistance and strength (e.g., 85 MPa allowable at 600°C per ASME) in oxidizing or mildly reducing atmospheres.

Q: What welding filler for ASTM A240 Grade 316Ti?

A: Use ER316Ti or ER316L filler via GTAW/SMAW; low heat input (1.0–1.5 kJ/mm) minimizes Ti loss; no preheat or post-weld anneal required for most joints—the weld retains full stabilization and matches base metal corrosion resistance.

Q: Is ASTM A240 Grade 316Ti suitable for seawater?

A: Yes; its 2–3% molybdenum provides excellent pitting and crevice resistance (PREN 25, CPT ~30°C), while titanium ensures weld zones remain resistant—widely used in desalination evaporators and offshore heat exchangers.

Q: What is the maximum carbon content in ASTM A240 Grade 316Ti?

A: ≤0.08%, but typically 0.04–0.07% in practice; titanium (5x(C+N) min) binds all free carbon, preventing sensitization even at this level—higher than 316L but stabilized for thermal applications.

Q: Is ASTM A240 Grade 316Ti magnetic?

A: Non-magnetic in annealed condition (fully austenitic); cold working induces minor martensite (<10%), causing slight magnetism—full annealing at 1050°C restores non-magnetic properties.

Q: Available sizes for ASTM A240 Grade 316Ti plates?

A: Thickness 0.5–100 mm (plates), 0.3–6 mm (sheets); widths to 3000 mm, lengths to 12000 mm; custom cuts and forming available with tight tolerances (±0.05 mm).

Q: How does 316Ti compare to 321 in corrosion?

A: Both titanium-stabilized; 316Ti adds 2–3% molybdenum for superior chloride pitting resistance (PREN 25 vs 19), making it better for wet corrosive + heat environments like acid plants; 321 is sufficient for dry high-temperature oxidation.

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11. Why Choose Gangsteel?

Gangsteel’s 25+ years, 400+ metallurgists, and Ti-control expertise ensure E-E-A-T. Export 80k tons/year, ABS/DNV certified. For 316Ti: 100% PMI, custom Ti ratios, global logistics. See ASTM A 240 Gr 321H. Trusted by BP, Exxon.

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12. Conclusion

ASTM A240 Grade 316Ti (S31635) from Gangsteel is the titanium-stabilized, molybdenum-fortified specialist for welded, high-heat, chloride-exposed service—its dual protection conquering refineries, power plants, and exhausts. Matching EN X6CrNiMoTi17-12-2 with thermal-tough mechanics, at $4.5–6.0/kg in November 2025, it’s precision value. Contact for quotes or data on this or ASTM A 240 Gr 304LN. Engineer endurance with Gangsteel.